Improvement in car-wheels



Gar-Wheels.

No.l47,9l5. A Patented Feb. 24.1874.

Fig 2 Mnomse Y Ma ven/55%.

DAVIS H. DOTTERER, 0F PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT lbl CARWHEELS.

Specification forming part of Letters Patent N0. lill 1,9ll5, dated February 24, 1874 application filed June 1e, 1873.

To all whom it may concern:

Be it known that l, DAvrs H. Dor'rnnnn, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Car-lVheels; and I do her'eby declare the l following to be a full, clear, and exact description of the invention, such will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.V

Referring to the drawings, Figure l is a verticalcentral sectional view of wheel and `attachment embodying my invention. Fig. 2 is a front view of wheel. Fig. 3 is a view of the glands, showing lugs. Fig. 4 is a view back of the lugs, to which the wheel is bolted. Fig. 5 is a view `of the wheel with part of disk broken away and the sleeve removed.

My invention has for its object to effect the following results: First, to prevent the slipping of the wheels in turning curves, and in cases where the wheel on one end of the axle is of greater circumference than the wheel on the other end; second, to prevent the chaling of the rails and flanges in turning curves; third, to strengthen the axle at the point where it is most liable to break.

The nature of the invention consists in the construction and combination of the several parts, as hereinafter fully described.`

Referring to the accompanying drawing, which illustrates my invention, A is an axle, of which the part a fits and turns in a box of usual or any suitable consti-notion. B is the wheel, having a hub, B', formed with lugs l) b, for the reception of bolts b b. mounted loosely upon the axle A, and east with a flange, G1, to which the wheel B is drawn and secured by the bolts b b', and a collar, G2, against which the shoulder el of the socket D fits. The socket D litsA tightly at the part D upon the axle A, the other part encircling the sleeve C, as shown. A loose metallic ring, E, is placed between the end of the sleeve C and. the shoulder d1 of the socket D. d2 is an oil-cha1nber in the socket D, to which access is had by means of the screw-hole d4.

C is a sleeve,v

It will be observed that the oil cannot escape from this chamber without lubricating all the working parts. l5 is a flange upon the end of the socket D, having lugs for the reception of the bolts e c, by which the socket is secured to the sectional gland` F. Between the flange d5 and the gland F is a leather ring, G', which is designed to form an oiltight joint. The object of the loose ring E is to present two wearing-surfaces, thereby reducing' friction.

To draw on new wheels, remove the bolts b b and insert two long threaded bolts, by .screwing which the wheel is drawn on; Vthen re move these long bolts and replace the bolts Z2 b', and screw them up so as to bring the hub of the wheel against the 'flange G1.

It is not required that the wheels should be forced on very tight, as the flange U1, in connection with the bolts b bf, holds them firmly in position.

The advantages of this construction are, iirst, the wheels can revolve independently of the axle, thereby preventing slipping, chafing, andfriction on curves, and in case the circumference of one wheel is greater than that of the other on the same axle 5 second, the strengthening of the axle at the point where it is most liable to break, this being effected by means of the lsleeve U, which affords support to the axle, and relieves it of much of the strain; third, as the wheels are not required to be drawn on so tight as in the usual construction, the tendency to burst by the expansion of the axle from heating is greatly diminished, and their weight is materially reduced by making a smaller hub; fourth, where journals and brasses eut and become heatedby friction, in such case the wheels will revolve, and the axle remain in a state of rest, thereby preventing detention of trains, and damage to journals and boxes; fifth, the facility with which the wheels can be put on and taken off, dispensing with the necessity of sending them to a wheel-foundry for that purpose.

Vhat I claim my invention isl. The combination of the wheel B and sleeve C, as set forth.

2. The sleeve C, having the flange C1 and In testimony that I claim the foregoing I coller G2, as set forth. have hereunto set my hand this 6th day of 3. The combination of the sleeve C and June, 1873. socket D, as setforth.

4. The Socket D, fitting tightly upon the DAVIS H- DOTTERER- axle A, as described, in combination with the Vtnesses: gland F, as set forth. GEO. C. SHELMERDINE,-

5. The combination of the sleeve G, socket M. DANL. GoNNoLLY. D, and gland F, as set forth. 

